Yep, you'll get better responses in the Travel Technology forum.
If you're an 'intermediate' level IT user, you could do worse than convert a Dell Mini to a Mac -
details here - it took me a couple of hours but I'm very, very pleased with the result. Although I don't type on it too much.
Though beware, if you update your OS to 10.6.2 your machine will stop working. It seems that Apple have removed support for the Atom processor from the most recent update.
I'm sure someone will find a workaround shortly, but this sort of thing ought to be born in mind if you go down the 'mod' route.
Edit: Here is a link to Macrumors with further details: